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Last change
on this file since 13067 was
6152,
checked in by bfarka, 14 years ago
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added ecj and custom statistics to communicate with the okb services #1441
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File size:
620 bytes
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| 1 | /*
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| 2 | Copyright 2006 by Sean Luke
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| 3 | Licensed under the Academic Free License version 3.0
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| 4 | See the file "LICENSE" for more information
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| 5 | */
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| 6 |
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| 7 |
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| 8 | package ec.app.regression;
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| 9 |
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| 10 | /*
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| 11 | * Sextic.java
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| 12 | *
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| 13 | * Created: Fri Nov 30 21:38:13 EST 2001
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| 14 | * By: Sean Luke
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| 15 | */
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| 16 |
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| 17 | /**
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| 18 | * Sextic implements a Symbolic Regression problem.
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| 19 | *
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| 20 | * <p>The equation to be regressed is y = x^6 - 2x^4 + x^2, {x in [-1,1]}
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| 21 | * <p>This equation was introduced in J. R. Koza, GP II, 1994.
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| 22 | *
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| 23 | */
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| 24 | public class Sextic extends Regression
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| 25 | {
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| 26 | public double func(double x)
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| 27 | { return x*x*x*x*x*x - 2.0*x*x*x*x + x*x; }
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| 28 | }
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